Verilux Wireless Doorbell Kit LED Flash Doorbell Self Powered 492ft Range 60 Ringtones Wireless Door Chime  (60 Tunes)

SELF POWERED HIGH PERFORMANCE DOORBELL FOR HOME: Applying physical drive the ringbell, when you press down the transmitter, the ringbell will work as the pressing force can be conversed to enough power to drive on the transmitter, no hassle to change battery any more. Clear ringtone and 5 level volume adjustable, no delay, quick responce, perfect for apartment, villa, office, Home. LED FALSH LIGHT DESIGN: If you still worry about you can't hear the ringtone, no need to worry at all, as we designed a LED blue flash light on the reciver, as long as you can see the receiver, you can 'see' the doorbell ring. Once someone press the doorbell, the led will flash go with the ringtone, eventhough for people who has hearing problem, they won't miss the ringbell. 492FT NO LATENCY RESPONCE: Reliable wireless signal coverage (Unobstructed space) anti interfering with your home electronics. Note: Note: Transmitter should not be installed on metal door, otherwise will affect the signal receiving; receiver will be better stay away from appliances of large radiation. 60 RINGTONE SWITCH FREELY & 5 VOLUME LEVELS: Built in 38 Ringtones, you can change it freely. 5 level of volume adjustable, you can set the proper volume as your needs. Intuitive button control, easy to use. EASY TO INSTALL: Including 1 receiver and 1 transmitter, nail free installation is more convenient for you. The transmitter is self powered and the receiver is plug and play, suitable for 80-260V household voltage.